Synchronous Rotary Spark Gap

Click any photo for a larger view

 
 

 

The motor used here was manufactured by WSM, Inc for Terminal Data Corp. and exhibits a fair amount of torque.
Scrounged from Mendelson's (MECI) in Dayton, OH, for $12.50 less run cap.
1800 RPM, 1/30 HP, 50/60 HZ, 115 VAC, Continuous Duty, requires 5µF run capacitor.


 
 

 
 

Below are some photos of the armature, note the four distinct poles.